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** X4102 for 220V operation | ** X4102 for 220V operation | ||
** You can see the location of these pins on page 63 of the service manual <ref>https://www.eevblog.com/files/philips_pm2811_pm2812_pm2813_sm.pdf</ref> | ** You can see the location of these pins on page 63 of the service manual <ref>https://www.eevblog.com/files/philips_pm2811_pm2812_pm2813_sm.pdf</ref> | ||
* The fuses must be replaced. The required fuse current is different for each voltage configuration | * The fuses must be replaced. The required fuse current is different for each voltage configuration, and also depends on the number of modules the power supply is configured with | ||
** Note that number of modules is not the same as number of outputs. Some PM2812 have 2 power modules, while some have 3. | |||
* Please write on the back of the unit the current supported voltage. | |||
=== Fuses === | |||
{| class="wikitable" | {| class="wikitable" | ||
|+Required fuse value | |+Required fuse value | ||
! | !Fuses 2x: | ||
! | !1 Module<br/>PM2811 | ||
! | !2 Modules<br/>PM2812/[0,1,2] | ||
! | !3 Modules<br/>PM2812/[3,4]; PM2813 | ||
|- | |- | ||
| | |110V | ||
| | |2.5AT | ||
| | |4AT | ||
| | |6.3AT | ||
|- | |- | ||
| | |220V | ||
| | |1.25AT | ||
| | |2.5AT | ||
| | |3AT | ||
|} | |} | ||
Revision as of 03:35, 23 February 2026
| PM281X: Switching between 110V and 220V | |
|---|---|
| Device | PM281X |
| Affects part(s) | |
| Needs equipment | Screwdriver |
| Difficulty | ◉◌◌◌ Easy |
| Type | Teardown |
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Problem description
If you have bought a Philips/Fluke PM2811, PM2812, or PM2813 power supply from a country who's electric grid runs at a different voltage, you may want to modify your power supply, to match your electrical grid (instead of using a transformer).
Solution
These power supplies are internally configured to one of the following ranges:
- 94V .. 130V (a.k.a. nominally 110V)
- 190V .. 255V (a.k.a. nominally 220V)To switch the voltage of the power supply between 110V/220V configurations you have to take the following actions:
- Move the black jumper wire on the "Input Module" PCB, to the correct jumper. (this is marked via silkscreen on the PCB)
- (Note: the service manual forgets to mention this)
- The blue (bl) wire of the cable loom DB1 must be connected to
- X4106 for 110V operation
- X4102 for 220V operation
- You can see the location of these pins on page 63 of the service manual [1]
- The fuses must be replaced. The required fuse current is different for each voltage configuration, and also depends on the number of modules the power supply is configured with
- Note that number of modules is not the same as number of outputs. Some PM2812 have 2 power modules, while some have 3.
- Please write on the back of the unit the current supported voltage.
Fuses
| Fuses 2x: | 1 Module PM2811 |
2 Modules PM2812/[0,1,2] |
3 Modules PM2812/[3,4]; PM2813 |
|---|---|---|---|
| 110V | 2.5AT | 4AT | 6.3AT |
| 220V | 1.25AT | 2.5AT | 3AT |